Pneumatic action.



H. A. GALLY.

PNEUMATIC ACTION.

APPLICATION FILED SEPT. 25. 1911.

Patented Nov. 26, 1918.

UNITED STATES PATENT OFFICE.

ROBERT A. GALLY, OF CINCINNATI, OHIO, ASSIGNOR TO THE BALDWIN COMPANY, OF CINCINNATI, OHIO.

PNEUMATIC ACTION.

Specification of Letters Patent.

Patented Nov. 26, 1918.

Application filed September 25, 1917. Serial No. 193,177.

To all whom it may concern:

Be it known that I, ROBERT A. GALLY, a

citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Pneumatic Actions, of which the following is a specification.

Prior devices for setting a pneumatically controlled movement to a certain position or locked condition and releasing or returning from .the said position or condition by another control element or impulse, have included such structures as the pneumatic organ swell of Skinner, #500,040, June 20, 1893; the expression adjuster, lock and release of M. Gally, #329,304, October 27, 1885; the pedal control action of Hedgeland #638,709, December 12, 1899; the catch action of Brand, #835,777, November 13, 1906; and the pneumatic lock of VVelte- Bockische, #1,008,291, November 7, 1911, the latter patent being especially designed for the control of the air tension changes for a pneumatic piano device, including means for varying the speed of movement of the controlling pneumatics.

The control of a pneumatic to different speeds of movement is not only shown in the said Welte-Bockische patent, being there accomplished by two valves 1, 7' connected by two tubes .2 and p to a pneumatic 6, but in patents of prior application dates, namely Brand #833,995, October 23, 1906, applica tion filed October 26, 1900, and R. A. Gally, #1,101,919, June 30, 1914, application filed May 11, 1903, a plurality of air service valves to one pneumatic had been employed, and prior to all these dates a plural service to a motor pneumatic to vary its speed of operation had been made and sold by this applicant. the same party as the applicant for said Patent #1. 101,919, having been set forth by aflidavits filed in the file of application #156,623; from which the said Patent #1,101,919 was issued. In the present in vention the locking action is secured by a sliding D valve having two pneumatic motors to actuate the said valve, one motor to move it to active service. the other to return it to inactive condition. IVhile a D valve moved by a pneumatic is very old, as in O. H. Needham, #250,833, December 13, 1881, only one pneumatic was employed to operate that D valve, and a spring caused the immediate return of the valve when that one pneumatic was relieved, and although Philipps #1,115,735 has a D valve moved in two opposite directions by two actuating pneumatics, his said valve is normally at median position, his two actuating pneumatics are adapted to act together when his two control apertures open at the same time, as they do when his two music sheets are in perfect synchronism, and he has three ports controlled by his valve, and two pneumatic motors served thereby, whereas in the present invention the valve is normally at one end or the other of its movement, the two actuating pneumatics always act separately, and there are only two ports serving only one motor pneumatic.

In the present invention the two speeds of movement of one element of an apparatus operated by a pneumatic means is accomplished by the use of two pneumatics operatively connected to the one said element, one of the said pneumatics having a different speed of air service actuating it than that of the other said pneumatic, but both said pneumatics adapted to move the said element in the same direction.

In the drawings, Figure 1 is an elevation, partly sectional, showing the locking devices, and the varied speed control movement. including a floating member assisting the obtaining of extra degrees or speeds of movement; while Fig. 2 is a modified form without a floating member, and Fi 3 a plan view of the arms. rod and lug of Fig. 2.

In our main showing, Fig. 1 there is a movable element 1, which may be the means of performing or controlling any desired movement or operation. To this element 1 is pivoted by a pivot 3. a floating lever 2 extended in both directions from the pivot 3, and having at each end of said lever 52 a connecting rod or wire 4, 5. each rod 4, 5. connected at its other end to a corresponding pneumatic 6. 7, the collapse of either one of these two pneumatics 6, 7, causing the same direction of movement of the element 1 as indicated by the arrow therewith. As one pneumatic may be provided with a different tension. rate of air service than the other, it is thereby possible to have two speeds of movement of the element 1 according to which of the two pneumatics 6, 7, is actuated. and by the action of both the two pneumatics at one time the added power of the two would cause a third degree of speed of movement of the element 1. While two neumatics to actuate one element is old, as 1n Clark #1,0l4,949, January 16, 1912, filed May 12, 1909, and a different air tension was connected to each of the two pneumatics, that use only accomplished one length of stroke of his movin element, the key B, whether one or the ot er pneumatic was actuated or both together.

In the present showing the diiferent speeds of action of the two pneumatics 6, 7, are secured by the different size of air service channels 8 and 9 leading from their respective pneumatics 6, and 7, to the valves 10 and 11 controlling the service and return flow of air of the two pneumatics 6, 7. The two pneumatics 6, 7 might be different in size, or of their leverage, to the element 1, and thereby secure a diiiering speed from an equal capacity or tension service, or such varied size or leverage of pneumatic be combined with measures of securing a varied power of movement of the element 1, and yet be of the gist of the present invention. Also.

the floating member 2 may be omitted, and

the two pneumatics 6, 7, disposed to act in some other manner, as for instance as in Figs. 2 and 3, by the direct action from the pneumatics 6, 7, by arms 12, 13 engaging directly under a lug 14 on the movable element 1, and the different air capacities of service to the two pneumatics 6, 7, secure different speeds of movement according to which one or both of the said pneumatics are actuated at one time and by employing checks 22, 23, or other suitable means, the extent of movement of each pneumatic can be made of a fixed or regulated degree, and one such degree different to the other, or of equal amounts, as may be desired. For control of the two pneumatics 6, 7, to different speeds under any of the above stated conditions, any style of valves may be used in lieu of the slide valves 10, 11 now shown, but these slide valves are especially desirable for the securing of a simple and certain means of looking a pneumatic to active or inactive positlon, as will now be described.

Each slide valve 10, 11, is of the D type, and has a chamber 15 adapted to connect the port of the channel 8 or 9 to the air servme 16, 17 of the apparatus whenever either valve 10, or 11 is slid to its active position by means of a primary pneumatic 18 or 19 or other initiating force, as shown by valve 11 and primary pneumatic 19. The same yalyes 10, 11 are adapted to release the air inside of the corresponding pneumatics 6, 7. when either such valve is slid to the inactive position by means of a primary pneumatic 20 or 21, as shown by valve 10 and primary pneumatic 20, the outer ends of channels 8 or 9 acting as relief ports for the release of pneumatics 6 and 7. The several primary tions made, and yet the structure be subiect to What I claim as my invention, is:

1. A movable element, a lever connected to the said element intermediate the length of the said lever, and two pneumatics, one said pneumatic connected to the said lever at one side of its connection to the said element, and the other said pneumatic connected to the said lever at the other side of the said connection, and means adapted to cause the operation of either one of the said pneumatics at will.

2. A movable element, a lever connected to the said element intermediate the length of the said lever. and two pneumatics, one said pneumatic connected to the said lever at one side of its connection to the said element, and the other said pneumatic connected to the said lever at the other side of the said connection, and means adapted to cause the operation of either one of the said pneumatics at will; and both the said pneumatics adapted to operate the said element in the same direction.

3. A movable element, a lever connected to the said element intermediate the length of the said lever. and two pneumatics, one said pneumatic connected to the said lever at one side. of its connection to the said element,

. and the other said pneumatic connected to the said lever at the other side of the said connection. and means adapted to cause the operation of either one of the said pneumatics at will; and to cause the operation of both said pneumatics at one time.

4. A movable element, a lever connected to the said element intermediate the length of the said lever, and two pneumatics, one said pneumatic connected to the said lever at one side of its connection to the said element, and the other said pneumatic connected to the said lever at the other side of the said connection, and means adapted to cause the operation of either one of the said pneumatics at will, and to cause the operation of both said pneumatics at one time, both the said pneumatics adapted to operate the said element in the same direction.

5. A movable element, a lever connected to the said element intermediate the length of the said lever, and two pneumatics, one said pneumatic connected to the said lever at one side of its connection to the said element,

and the other said pneumatic connected to the said lever at the other side of the said connection, means adapted to cause the operation of either one of the said pneumatics at will, and means adapted to cause the operation of both said pneumatics at one time, the said operation of both pneumatics at one time moving the said movable element to a greater distance than the operation of the said element by either one of the said pneu ma'tics by itself.

(3. A movable element, a lever connected to the said element intermediate the lengths of the said lever, and two pneumatics, one

' said pneumatic connected to the said lever at one side of its connection to the said element, and the other said pneumatic connected to the said lever at the other side of the said connection, and means adapted to cause the operation of either one of the said pneumatics at will, and to cause the operation of both said pneumatics at one time, both the said pneumatics adapted to operate the said element in the same direction, the said operation of both pneumatics at one time moving the said movable element to a greater distance than the operation of the said element by either one of the said pneumatics by itself.

7. A movable element; two pneumatics; operative connections from the said pneumatics to the said element; each said pneumatic movable in the same direction but mechanically limited to different distances one to the other, and means adapted to induce the operation of each said pneumatic separately from the other said pneumatic.

8. A movable element; two pneumatics; operative connections from the said pneumatics to the said element; each said pneumatic movable in the same direction but mechanically limited to different distances one to the other. and means adapted to induce the operation of each said pneumatic separately from the other said pneumatic; or to induce the operation of both said pneumatics together.

9. A movable element; two pneumatics; operative connections from the said pneumaties to the said element; each said pneumatic movable in the same direction but mechanically limited to different distances one to the other, and means adapted to induce the operation of each said pneumaticseparately from the other said pneumatic; and means adapted to check the throw of one said pneumatic to a different amount of movement of the said movable element than the movement of the said element by the other said pneumatic.

10. A movable element; two pneumatics; operative connections from the said pneu- .matics to the said element; each said pneumatic movable in the same direction but mechanically limited to different distances one to the other, and means adapted to induce the operation of each said pneumatic separately from the other said pneumatic; and means adapted to check the throw of one said pneumatic to a different amount of movement of the said movable element than the movement of the said element by the other said pneumatic.

11. A sliding D valve; a pneumatic adapted to move the said valve in one direction and one certain distance only, and another pneumatic adapted to move the said valve in the opposite direction and the same certain distance only; a service port and a single relief port only, both said ports controlled by the said valve; and a single other pneumatic having direct and constant connection to the said relief port.

12. A valve; a pneumatic adapted to move the said valve in one direction and in one certain distance only, and another pneumatic adapted to move the said valve in the opposite direction and the same certain distance only; the said valve and pneumatics adapted to a position of rest of the said valve at the end of its movement of the one certain distance only in either direction and with both said pneumatics inactive at such times of rest of the said valve; a service port and a single relief port only, both said ports controlled by the said valve; and a single other pneumatic having direct and constant connection to the said relief port.

13. A slide valve; a pneumatic adapted to move the said valve in one direction and one certain distance only, and another pneumatic adapted to move the said valve in the opposite direction and the same certain distance only; a service port and a single relief port only, both said ports controlled by the said valve; and a single other pneumatic having direct and constant connection to the said relief port.

14. A slide valve; a pneumatic adapted to move the said valve in one direction and in one certain distance only, and another pneumatic adapted to move the said valve in the opposite direction and the same certain distance only; the said valve and pneumatics adapted to a position of rest of the said valve at the end of its movement of the one certain distance only in either direction and with both said pneumatics inactive at such times of rest of the said valve; a service port and a single relief port only, both said ports controlled by the said valve and a single other pneumatic having direct and constant connection to the said relief port.

15. A sliding D valve; a pneumatic adapted to move the said valve in one direction and one certain distance only, and another pneumatic adapted to move the said valve in the opposite direction and the same certain distance only; a service port and a single relief port only, both said ports controlled by the said valve; and a single other pneumatic having direct and constant connection to the said relief port.

16. A sliding D valve; a pneumatic adapted to move the said valve in one direction and one certain distance only, and another pneumatic adapted. to move the said valve in the opposite direction and the same certain distance only; the said valve and pneumatic adapted to a position of rest of the said valve at the end of its movement of the one certain distance only in either direction and vvith both said pneumatics inactive at such tlmes of rest of the said valve; a service port and a single relief port only, both said 15 ports controlled by the said valve; and a single other pneumatic having direct and constant connection to the said relief port. ROBT. A. GALLY. W1tnesses:

PAUL J. HENGGE, NORMA KEISER. 

